Spatial division multiple access wireless communication systems

  • US 5,642,353 A
  • Filed: 06/05/1995
  • Issued: 06/24/1997
  • Est. Priority Date: 12/12/1991
  • Status: Expired due to Term
First Claim
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1. A wireless systems for receiving signals transmitted by at least one transmitter at locations remote from at least one base station, said system comprising in combination:

  • receiving means, including plural receiving antennas for making measurements of received signals received by said base stations, the received signals resulting from signals transmitted by at least one transmitter, said measurements being composed of different combinations of said transmitted signals,processing means for estimating the number of said received signals and estimating parameters thereof, andspatial demultiplexing means for obtaining said transmitted signals from said measurements by separating said received signals using said estimated number of received signals and said estimated parameters of said received signals, and associating said received signals with each of said at least one transmitter,whereby the number of received signals, parameters thereof, and said signals transmitted by each transmitter become known.

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